Stutter when creating meshes

I was wondering if anyone had this issue - if I create any kind of surface there is a noticeable delay when the program is creating a mesh. It only happens in the Rhino 5 64 bit version - not the 32 bit or the current WIP release. It’s just a slight delay but it’s enough to mess with my work.

Thanks,
John

Restarting the computer fixed it.